The whole lead poisoning scandals are really great examples of how capitalism/free markets have serious limits to what they can achieve. They should should be seen as a useful tool to help make certain markets more efficient and not as an ideology to embraced without limitations.
Even when consumers understood that leaded petrol for example was contaminating the air and water with carcinogens that harmed many many people especially babies and small children the market still had demanded leaded petrol and that demand was catered to by companies making huge profits and scientists deemed that there was no safe threshold.
It's been speculated that the fall of the Roman Empire can be partially attributed to prevalence of lead pipes and leaded drinking vessels. When a critical mass of elites/rulers have lead poisoning there was a subsequent collapse of those societies.
In short it's basically a national security issue even if it does make fuel cheaper and more effective.
Even when consumers understood that leaded petrol for example was contaminating the air and water with carcinogens that harmed many many people especially babies and small children the market still had demanded leaded petrol and that demand was catered to by companies making huge profits and scientists deemed that there was no safe threshold.
It's been speculated that the fall of the Roman Empire can be partially attributed to prevalence of lead pipes and leaded drinking vessels. When a critical mass of elites/rulers have lead poisoning there was a subsequent collapse of those societies.
In short it's basically a national security issue even if it does make fuel cheaper and more effective.